“Thought-terminating clichés”

https://en.wikipedia.org/wiki/Thought-terminating_cliché

Also… I don’t think it has a name, but dubiously claiming any of these examples in an argument. Maybe it’d just be called “deflection”.

I’ve seen so many valid arguments shutdown as whataboutism, sealioning, concern trolling when they were valid arguments. It’s just as much bullshit as actually doing any of those things.